FOLH1 and colon adenocarcinoma: Immunohistochemistry shows that prostate-specific membrane antigen (PSMA), notwithstanding its name, can be also overexpressed on the endothelial cells of the neo-vasculature of several types of solid tumours as well-differentiated thyroid carcinoma, lung adenocarcinoma, gastric/colon adenocarcinoma and renal carcinoma.